Home / 112,650.92-155,441.94-72,368

Finding the Fourth Proportional to 112,650.92, 155,441.94 and 72,368

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Solution

The fourth proportional to 112,650.92, 155,441.94 and 72,368 is: 99,857.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,650.92 : 155,441.94 = 72,368 : x
  2. Step 2: Convert to fraction form
    112,650.92/155,441.94 = 72,368/x
  3. Step 3: Cross multiply
    112,650.92x = 155,441.94 × 72,368
  4. Step 4: Simplify right side
    112,650.92x = 11,249,022,313.92
  5. Step 5: Solve for x
    x = 11,249,022,313.92/112,650.92
  6. Step 6: Final answer
    x = 99,857.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.